Posted on July 3, 2009 at 21:00
One of the things Edward de Bono taught me (among many others) is the importance of making a distinction between concepts and ideas.
Two years ago, my partner and I are approached by a company which is one of the world leaders in waterproofing of flat roof surfaces. Their product is called Derbigum and is black. The guarantee on the duration of the product is 30 years.
Competition is getting fearcer and they are slowly but surely losing… Continue